Power-press.



PATENTED FEB. 25, 1908 H. OSSWALD.

POWER PRESS. APPLICATION FILED JUNE 22, 1905. RENEWED AUG. 23, 1907.

2 SHEETS-SHEET 1.

lg um M'liesses:

NO. 880,289. PATENTED FEB. 25, T908, H. OSSWALD.

POWER PRESS.

APPLICATION FILED JUNE 22, 1905. RENEWED AUG. 23, 1997.

2 SHEETS-SHEET 2.?

UNITED s'ri-rr'ss PATENT onsi'sn.

HERMAN OSSWALD, OF NEW YORK, Y., ASSI GNOR TO THE V. & 0. PRESS COMPANY, OF

GLENDALE, NEW YORK, A CORPORATION OF NEW YORK.

rowan-Panes.

No. eso eee.

Specification of Letters Patent.

Patented rat. as, was.

Application filed June 22. 1905. Serial No. 266.381. Renewed August 23. 1907- Seriel No. 389.872.

T 0 all whom it may concern:

Be it known that l, HERMAN Osswnm, a citizen of the United States, and resident of the borough of Brooklyn. in the city and State of New York, have invented a new and useful Improvement in Power-Presses, of which the followin is a specification.

My invention re ates to a'power press and more particularly to a ress for cutting and forming sheet metal and other material with the ObjGCt in View of providing convenient means for controllin the action of the press.

The press to whic my present invention applies is of the t pe shown, described and o aimed inLetters atent No. 7 69,955 granted me September 13, 1904, and my present invention is directed particularly to means for preventing the locking of the shaft to the drive wheel for more than a single revolution of the shaft in the event the operator should keep the operating treadle depressed longer than intended, while at the same time provision is made for operating the press continuously so long as the foot treadle is depressed when for any reason it is 'desired to do so.

In the accompanying drawings, Figure 1 is a view or the press in side elevation partly in section, showing the arts in the position which they assume w en the shaft is not locked to the drive wheelFig. 2 is an enlarged view in detail partly'in section and partly in elevation, showing the parts in the psition which they assuniewhen the latch "or o crating the switch. plate is -withdrawn and t irown out of engagement with the stop,

Fig. 3 is an enlarged View in, detail partly in section, taken in the plane of the line A-A of Fi 1, showing indotted lines the position whic the latch o er'ating cam ma assume when it is desire to operate the s aft con tinuously. Fl e is an enlarged transverse section throng the drive shaft, Fig. 5 is a partial section taken longitudinally through the shaft and hub of the drive wheel and parts adjacent thereto, the section being taken. in the plane of the line BB of Fig. 4,

Fig. 6 is a transverse section through the shaft in the plane of the line 0-0 of Fig. 5,

ane

Fig. 7 is a section through Fig. 5 in the of the line D l) showing the locking og in full length, and Fig. 8 is a transverse section through the shaft in the plane of the line i l-15 of Fig. 5. a

shaft by- 3 and the drive w ed on the shaft 3, is denoted by 4;

The switch plate which slides toward and 1 away from the shell 3, is denotedjby 5, the frame in which it slides is denoted by'li' and the-dog which slides to a limited extent pan I allel with the axis of the shaft 3 and serves to lock the wheel 4 to the shaft 3, is denoted The shaft 3 has an enlarged portion 26 in. which there is formed a groove 27 for receiving an annular ring 28. The ring 28has an I inwardly pro ecting wedge-shaped portion 29, (see Fig. 7 which coacts with a recess 30 1n the dog to withdraw, the dog from locking engagement withthe hub of the wheel i orto 1 permit the dog to slide into locking enga e-v ment with the hub of the wheel a undert .e'

tension of the dogactriating spring 31- aocording as the ring 28 is rocked in the onedij rection or the other in the groove. 2?.

T e l ring 28 cooperates with the switch plate 5 to operate the dog) The parts a substantially the same manner as that shown 7. ove enumerated operate in,

and described at length in my Letters Fatent above referred to and the structure oi the parts-is quite similar to that shown insaid patent with the following exception, to wit: The switch plate 5 is provided witlfi two stems denoted by Sand 9 respectively and. these stems are each provided with a spring coiled.

thereon, th'fe springs eiiein denoteiihy 1G and 11, for the purpos of olding the switch plate 5 normally in: its advancedposition:

with respect to the shaft 3, that is, in posi tion to crowd the locking dog Tout of its .po-

sition for locking the drive wheel l to the shaft. In practice it frequently in then pause before again rotating it. At the same time unless some provision is made for automatically arresting the rotation ofthe shaft when a single revolutionis completed,

econies desirable to rotate the shaft 3 a single revolution and the operator is liable to hold the foot treadle 12 depressed too long and the shaft startson a second revolution or if the operator have,

his mind closely on the operating of the tree.-

dlc 12, it detracts from his efficiency in pay 1 40 the treadle'12 is depressed to draw the switch ing close attention to the adjustment of the work which the press is operating on.

To leave the operator free so far as devoting close attention to the treadle is concerned and to stop the press after the shaft has made a single revolution. when the work is of a I character to require such stop ing, I provide dog 7 to lock the drive wheel to the shaft I whenever the treadle 12 is depressed. I further provide the latch 16 with an inclined surface 18 which contacts with an inclined face 19 on a'latch operating cam 20 when the latter is s'wung up into operative position as shown in Figs. 1 and 2. The cam 20 is hinged at 21 to the frame which supports the switch plate so that when not required for use it may be swung down out of operative position as shown in dotted lines in Fig. 3.

stem is surrounded within the socket piece 24' he latch 16 is pressed toward the-stop 13 and toward the cam 20 by means of a sprin actuated presser pin 22, the stem 23 of whic passes longitudinally through a socket piece 24 screwed into the frame-6, and the said by a-coil spring 25 to press the pin 22 toward the latch. I

In operation, when it is desired to limit the rotary movement of the operating shaft to a single rotation before a pause, the latch operating cam 20 isthrown up into operative position as shown in Fi s. 1 and 2, and'when 2 plate. back and permit the do 7 to. lock the wheel: to the shaft, the initia movement of the latch will draw the switch plate back and start the operation of the shaft while its fnrther movement because of the engagement of the incline 18 on the latch with the lncline 19 on the cam will throw the latch up out of en-.

gagement with the stop 13 and theswitch plate will thereupon spring back under the influence of its operating s rings 10 and 11, into position to withdraw t e dog 7 and stop the rotation of the shaft just as soon as it has completed a revolution.v On the other hand, when it is desired to leave the latch 16 at all times in connection'with the stop 13, the cam 20 maybe turned down out of operative position as shown in dotted lines, Fig. 3, and

' when so thrown out of position, the shaft will remain locked to the drive wheel just so long few or many revolutions.

as the treadle 12 is depressed, whether for What I claim as my'invention is:

1. The combination with he shaftand drive wheel, of means for locking the shaft to and releasing it from the drive wheel, means for operating said locking and releas ing means and controlling means for making said operating means automatic or not, at y a '10 2. The combination with the shdtt, the

pleasure.

drive wheel, the dog, for locking the dhaft to the drive wheel and the switch plate for operating the dog, of a latchfor operating the switch plate and means for throwing the latch out of engagement with the switch plate after the switch etermined distance.

3. The .-combination with. the shaft, the

drive wheel, the dog for lockingthe shaft to] the drive wheel and thelswitch plate for plate has moved a hseoperating thedog, of a'latch foroperating the switch plate-and acam for throwingfthe I latch out of engagement with the plate intermediate of the limits of its stroke. 4. The combination with the-shaft, the

drive wheel, the dog for locking the shaft to the drive wheel and the switch plate for o erating the dog, of a latch for operating t e switch plate and a movable .cam for. throwing the latch out of engagement with plate intermediate of the limits of" the switch its s'troko.

5. drive wheel, the dog for locking the shaft to the drive wheel and the switch plate for o crating the dog, of a latch for operating t e switch plate and a hinged camiforthrowing'the latch out of engagement with the, switch'plate intermediate ,of the limits of its.

stroke. *aa wheel ti) the shaft and the switch plate for operating the dog, ,of a rocking arm, a latch pivoted to the rocking arm 1n position to The combination with "the shaft, .the

Thecombination with the shaft, the drive wheel, the dog for locking the drive."

engage and disengage the switch plate and a '7 fnir operating the latch and hence theswitch P v a 7. The combination with the shaft, the

drive wheel, the dog for locking'the shaft to foot treadle connected with the rocking arm. I

the drive wheel and *thejswitch plate for operating the dog, of a spring-actuated latch for engaging the switch plate and a treadle for operating the latch. ll l In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this 19th day 'of June, 1905. l

. I HERMAN OSSWALD- Witnesses: v

FREDK. HAYNns',

G. S.v SUNDGREN. 

